PF Blog

Study Details Advantages of MQL for Micromachining

By: Derek Korn
10. January 2013

MQL minimizes a shop’s environmental impact by significantly reducing fluid usage and eliminating the need for coolant treatment and disposal.


In a recent e-newsletter, Unist, designer and manufacturer of industrial fluid application systems, cited a study about micromilling 316L stainless steel using Minimum Quantity Lubrication. (MQL is the process of applying minute amounts of lubricant directly to the cutting tool/work piece interface instead of using traditional flood coolants.) The study found that a properly configured MQL process can reduce the built-up edge on a micro cutting tool and increase tool life as much as 100 times compared to dry milling. It cites the importance of quantifying tool runout, wetting both the cutting tool and the workpiece, and properly positioning the MQL stream to maximize lubrication at the chip/material interface.


The report (“Micromilling in Minimum Quantity Lubrication” found in Machining Science and Technology: An International Journal) is available for purchase here. Additional information about the advantages of machining with MQL can be found at Unist’s website as well as this blog post and this article about Ford’s use of MQL. 

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